Exfoliation stone



FIG. 1 is a perspective view showing a new design for an exfoliation stone;

FIG. 2 is a left side elevational view of the exfoliation stone shown in FIG. 1;

FIG. 3 is a right side elevational side view thereof;

FIG. 4 is a rear elevational side view thereof;

FIG. 5 is a front elevational side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for an exfoliation stone, as shown and described. 